Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Mortgage-backed and related securities - amortized cost (in Dollars)	$ 5,625	$ 9,825
Other marketable securities amortized cost (in Dollars)	$ 84,800	$ 75,759
Serial preferred stock, shares authorized (in Shares)	500,000	500,000
Serial preferred stock, shares issued (in Shares)	26,000	26,000
Common stock shares authorized (in Shares)	16,000,000	16,000,000
Common stock shares issued (in Shares)	9,128,662	9,128,662
Treasury stock, shares (in Shares)	4,735,589	4,705,073